1 files changed, 84 insertions, 0 deletions
diff --git a/vcl/source/treelist/imap3.cxx b/vcl/source/treelist/imap3.cxx
new file mode 100644
index 000000000..073725f34
--- /dev/null
+++ b/vcl/source/treelist/imap3.cxx
@@ -0,0 +1,84 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <vcl/imap.hxx>
+
+#include <tools/debug.hxx>
+
+/******************************************************************************
+|*
+|* Ctor
+|*
+\******************************************************************************/
+
+IMapCompat::IMapCompat(SvStream& rStm, const StreamMode nStreamMode)
+    : pRWStm(&rStm)
+    , nCompatPos(0)
+    , nTotalSize(0)
+    , nStmMode(nStreamMode)
+{
+    DBG_ASSERT(nStreamMode == StreamMode::READ || nStreamMode == StreamMode::WRITE, "Wrong Mode!");
+
+    if (pRWStm->GetError())
+        return;
+
+    if (nStmMode == StreamMode::WRITE)
+    {
+        nCompatPos = pRWStm->Tell();
+        pRWStm->SeekRel(4);
+        nTotalSize = nCompatPos + 4;
+    }
+    else
+    {
+        sal_uInt32 nTotalSizeTmp;
+        pRWStm->ReadUInt32(nTotalSizeTmp);
+        nTotalSize = nTotalSizeTmp;
+        nCompatPos = pRWStm->Tell();
+    }
+}
+
+/******************************************************************************
+|*
+|* Dtor
+|*
+\******************************************************************************/
+
+IMapCompat::~IMapCompat()
+{
+    if (pRWStm->GetError())
+        return;
+
+    if (nStmMode == StreamMode::WRITE)
+    {
+        const sal_uInt64 nEndPos = pRWStm->Tell();
+
+        pRWStm->Seek(nCompatPos);
+        pRWStm->WriteUInt32(nEndPos - nTotalSize);
+        pRWStm->Seek(nEndPos);
+    }
+    else
+    {
+        const sal_uInt64 nReadSize = pRWStm->Tell() - nCompatPos;
+
+        if (nTotalSize > nReadSize)
+            pRWStm->SeekRel(nTotalSize - nReadSize);
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */